Yes, you can. You will need to get back into your return to do so under the file tab. To get back into your return, please do these steps:
1. Sign into your Turbo Tax account
2. Click on tax home or take me to my return
3. Scroll down till you see Your tax returns and documents
4. Click on your 2018 return, and then select add a state (you are not actually adding a state, this just prompts the correct menu)
5. Navigate to where you need to on the return
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